Configuring Token exchange and NativeApp SSO

Overview

OAuth2.0 Token Exchange enables client applications to request and obtain security tokens (such as access tokens) from an authorization server acting as a Security Token Service (STS).

Configuring provider.yml

  • The definition configuration defines a new grant_type urn:ietf:params:oauth:grant-type:token-exchange.
# Copyright contributors to the IBM Verify Identity Access OIDC Provider Resources project version: 24.08 logging: level: debug definition: id: 1 name: OIDC Definition grant_types: - authorization_code - password - client_credentials - implicit - refresh_token - urn:ietf:params:oauth:grant-type:token-exchange pre_mappingrule_id: isvaop_pretoken # Pre-Token mapping rule ID. post_mappingrule_id: isvaop_posttoken base_url: https://isvaop.ibm.com:445/isvaop token_settings: # Token Settings issuer: https://isvaop.ibm.com # OP's issuer URI. signing_alg: PS256 # Signing algorithm for ID token generated. signing_keystore: isvaop_signing # Signing keystore name. signing_keylabel: jwtsigning # Signing key label. attribute_map: # Attribute mapping to resolve claims. also refer to attributesources.yml surname: surname server: ssl: key: ks:isvaop_keys/httpserverkey certificate: ks:isvaop_keys/httpservercert jwks: signing_keystore: isvaop_signing secrets: obf_key: "ENC:iUt+3MzCntxSL2FPTUuJqER79UaiRSApMz3cbgJm4yzuiv6H7KN8ADsamX6+Qre1oTsATjnb1bJ0Lmi7WWfxWeGT477yqqvgVayFlCDIFzZeNkdINjASfTE3B+/3Sm9YjIYuWtZdySiXeydhJXSiOGU9osdA9g2BZXR4eMrXNutCuaSvFH6MY+TyOH5q15vy6vEWOebJQHrnug0A8rN6NF8G8XaxCe/+yqH57jJpdhm0N7iUydIYOBOQ1wDgCc8nRMWkQqlkcRhDZvLLAIlhoshYvo06ubyryt8/vv/0AvTLq9AIiQoL8CtYLr+SNZlzWe4CnHYZdO9S+AIrUOVORw==" enc_key: "@keys/private.pem"

Configuring mapping rule

  • A new mapping rule called idmap.js needs to be created.
  • This mapping rule can be used to validate the subject or sub of the incoming token during token exchange.
  • Validation can be done by contacting an LDAP to check for the existence of the subject or sub.
/** * Copyright contributors to the IBM Verify Identity Access OIDC Provider Resources project */ importClass(Packages.com.tivoli.am.fim.trustserver.sts.utilities.IDMappingExtUtils); importClass(Packages.com.tivoli.am.fim.trustserver.sts.utilities.OAuthMappingExtUtils); importClass(Packages.com.ibm.security.access.user.UserLookupHelper); IDMappingExtUtils.traceString("Entering idmap mapping rule") IDMappingExtUtils.traceString("sub : " + stsuu.getPrincipalName()); let sub = stsuu.getPrincipalName(); IDMappingExtUtils.traceString("iss: " + stsuu.getAttributeContainer().getAttributeValueByName("iss")); IDMappingExtUtils.traceString("exp: " + stsuu.getAttributeContainer().getAttributeValueByName("exp")); //Initializing an ldap connection to search for the sub var userLookupHelper = new UserLookupHelper("ldap_test_cfg_01"); IDMappingExtUtils.traceString("sub validation for : " + sub); if(userLookupHelper.isReady()){ var user = userLookupHelper.getUser(sub); if(user.getId() == null){ IDMappingExtUtils.traceString("sub validation failed for : " + sub); } else{ IDMappingExtUtils.traceString("sub validation succeded for : " + sub); } } IDMappingExtUtils.traceString("STSUU: " + stsuu.toString());

Configuring storage.yml

  • Based on the above mapping rule, the LDAP connection is referenced by the UserLookupHelper usingldap_connection.
  • Update the ldapcfg configuration and the LDAP connection details in storage.yml.
... server_connections: # Server connections - name: ldap_srvconn # Connection name type: ldap # Connection type hosts: # List of host information (IP and port) - hostname: openldap # Server's hostname hostport: 636 # Server's host port credential: # Credential information to connect to the host. bind_dn: cn=root,secAuthority=Default # Specifies the binding credential for the LDAP server connection. bind_password: "OBF:U2FsdGVkX1+BPKsUsh0oGSsNNr1HSsAQWwPLB30MyDs=" # Specifies the binding password for the LDAP server connection. It is recommended to obfuscate this. ssl: certificate: # The SSL connection certificate array. - ks:ldap_keys # The SSL keystore to be used for SSL connections. ks: indicates keystore. disable_hostname_verification: false # The SSL connection validates the hostname. conn_settings: # Connection pool settings for the LDAP server. It can be specified at the top level if the settings are common across hosts. max_pool_size: 50 # Maximum connection pool size. connect_timeout: 3 # Connect timeout, in seconds. aged_timeout: 5 # Aged timeout, in seconds. ldapcfg: - name: ldap_test_cfg_01 scope: subtree user_object_classes: top,Person,organizationalPerson,inetOrgPerson filter: (|(|(objectclass=ePerson)(objectclass=person))(objectclass=User)) selector: objectClass,cn,sn,givenName,userPassword srv_conn: ldap_srvconn attribute: uid baseDN: dc=ibm,dc=com

Configuring the static client

  • Configure two clients.
  • One client that generates token.
  • Another client that wants to exchange the token for a different token.
# Copyright contributors to the IBM Verify Identity Access OIDC Provider Resources project clients: - client_id: clientTokenExchange client_secret: "OBF:U2FsdGVkX19iBhlwc53QkybjO6RjFHhSbz4VRudYHA=" # Client secret that is used for client authentication and/or JWT signing/encryption. `OBF:` indicates obfuscated string. client_name: clientTokenExchange # Name of the client. client_id_issued_at: 1642399207 # Timestamp (in seconds) from when the client is created. enabled: true # Set to `true` to enable this client grant_types: # Grant type that the client is allowed to use at the token endpoint. - authorization_code - password - client_credentials - implicit - refresh_token - urn:openid:params:grant-type:ciba - urn:ietf:params:oauth:grant-type:token-exchange response_types: # Response type that the client is allowed to use at the authorization endpoint. - code id_token - code - code token - none - code token id_token redirect_uris: # Redirection URI strings for use in redirect-based flows such as the authorization code and implicit flows. - https://www.rp.com/redirect request_uris: # Request URIs that are pre-registered by the Relying Party for use at the OIDC Provider. - https://www.rp.com/request/test.jwt scopes: # A list of scope values that the client can use when requesting access tokens. - cdr:registration - openid - profile jwks_uri: https://www.rp.com/oidc/endpoint/default/jwks id_token_signed_response_alg: PS512 token_endpoint_auth_method: client_secret_post token_exchange_settings: client_groups: - benefits - insurance supported_subject_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token supported_actor_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token supported_requested_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token - client_id: tokenGenerated client_secret: "OBF:U2FsdGVkX19iBhlwc53QkybjO6RjFHhSbz4VRudYHA=" # Client secret that is used for client authentication and/or JWT signing/encryption. `OBF:` indicates obfuscated string. client_name: tokenGenerated # Name of the client. client_id_issued_at: 1642399207 # Timestamp (in seconds) from when the client is created. enabled: true # Set to `true` to enable this client grant_types: # Grant type that the client is allowed to use at the token endpoint. - authorization_code - password - client_credentials - implicit - refresh_token - urn:openid:params:grant-type:ciba - urn:ietf:params:oauth:grant-type:token-exchange response_types: # Response type that the client is allowed to use at the authorization endpoint. - code id_token - code - code token - none - code token id_token redirect_uris: # Redirection URI strings for use in redirect-based flows such as the authorization code and implicit flows. - https://www.rp.com/redirect request_uris: # Request URIs that are pre-registered by the Relying Party for use at the OIDC Provider. - https://www.rp.com/request/test.jwt scopes: # A list of scope values that the client can use when requesting access tokens. - cdr:registration - openid - profile jwks_uri: https://www.rp.com/oidc/endpoint/default/jwks id_token_signed_response_alg: PS512 token_endpoint_auth_method: client_secret_post token_exchange_settings: client_groups: - benefits - insurance supported_subject_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token supported_actor_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token supported_requested_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token
  • client_groups - Clients are logically grouper using client_groups configuration. Clients belonging to the same client_group can exchange tokens generated with another client belonging to the same group.

Token exchange request example

--header 'Content-Type: application/x-www-form-urlencoded' \ --data-urlencode 'client_id=clientTokenExchange' \ --data-urlencode 'client_secret=asfasdfawqdewq' \ --data-urlencode 'grant_type=urn:ietf:params:oauth:grant-type:token-exchange' \ --data-urlencode 'subject_token=_RFAfJNeB6H30IfDW1udc271ytq5BG5WwFSTvacNG1g.Oyr-LMYFrGXn9NrLPcTKOvAisGRGYUbtoyLkyD-BZCfNSgbW-EnWpAzRHZXTzMioGK2e9HcM0668nXATCStHWg' \ --data-urlencode 'subject_token_type=urn:ietf:params:oauth:token-type:access_token' \ --data-urlencode 'actor_token=JFQu9BDahuciIVICnLcmTkeMJeng92p38IKD--fsYmo._-ZQpBn6FP-BxraacU0snZdlm4ndnIBPmRHZcWixnleUmJfDhxladSAJMKLidW9-QX4DC1KwsPvX_f16_Keh8g' \ --data-urlencode 'actor_token_type=urn:ietf:params:oauth:token-type:access_token'

NativeApp SSO configuration

Native App SSO is a specification that allows sharing of identity across multiple mobile applications. Native App SSO is not based on session cookie, it extends the OAuth 2.0 Token Exchange specification to share identity (SSO) between apps produced and signed by the same vendor.

Configuring provider.yml

  • The definition configuration defines a new grant_type urn:ietf:params:oauth:grant-type:token-exchange.
# Copyright contributors to the IBM Verify Identity Access OIDC Provider Resources project version: 24.08 logging: level: debug definition: id: 1 name: OIDC Definition grant_types: - authorization_code - password - client_credentials - implicit - refresh_token - urn:ietf:params:oauth:grant-type:token-exchange pre_mappingrule_id: isvaop_pretoken # Pre-Token mapping rule ID. post_mappingrule_id: isvaop_posttoken base_url: https://isvaop.ibm.com:445/isvaop token_settings: # Token Settings issuer: https://isvaop.ibm.com # OP's issuer URI. signing_alg: PS256 # Signing algorithm for ID token generated. signing_keystore: isvaop_signing # Signing keystore name. signing_keylabel: jwtsigning # Signing key label. attribute_map: # Attribute mapping to resolve claims. also refer to attributesources.yml surname: surname server: ssl: key: ks:isvaop_keys/httpserverkey certificate: ks:isvaop_keys/httpservercert jwks: signing_keystore: isvaop_signing secrets: obf_key: "ENC:iUt+3MzCntxSL2FPTUuJqER79UaiRSApMz3cbgJm4yzuiv6H7KN8ADsamX6+Qre1oTsATjnb1bJ0Lmi7WWfxWeGT477yqqvgVayFlCDIFzZeNkdINjASfTE3B+/3Sm9YjIYuWtZdySiXeydhJXSiOGU9osdA9g2BZXR4eMrXNutCuaSvFH6MY+TyOH5q15vy6vEWOebJQHrnug0A8rN6NF8G8XaxCe/+yqH57jJpdhm0N7iUydIYOBOQ1wDgCc8nRMWkQqlkcRhDZvLLAIlhoshYvo06ubyryt8/vv/0AvTLq9AIiQoL8CtYLr+SNZlzWe4CnHYZdO9S+AIrUOVORw==" enc_key: "@keys/private.pem"

Configuring mapping rule

  • A new mapping rule called idmap.js needs to be created.
  • This mapping rule can be used to validate the subject or sub of the incoming token during token exchange.
  • Validation can be done by contacting an LDAP to check for the existence of the subject or sub.
/** * Copyright contributors to the IBM Verify Identity Access OIDC Provider Resources project */ importClass(Packages.com.tivoli.am.fim.trustserver.sts.utilities.IDMappingExtUtils); importClass(Packages.com.tivoli.am.fim.trustserver.sts.utilities.OAuthMappingExtUtils); importClass(Packages.com.ibm.security.access.user.UserLookupHelper); IDMappingExtUtils.traceString("Entering idmap mapping rule") IDMappingExtUtils.traceString("sub : " + stsuu.getPrincipalName()); let sub = stsuu.getPrincipalName(); IDMappingExtUtils.traceString("iss: " + stsuu.getAttributeContainer().getAttributeValueByName("iss")); IDMappingExtUtils.traceString("exp: " + stsuu.getAttributeContainer().getAttributeValueByName("exp")); //Initializing an ldap connection to search for the sub var userLookupHelper = new UserLookupHelper("ldap_test_cfg_01"); IDMappingExtUtils.traceString("sub validation for : " + sub); if(userLookupHelper.isReady()){ var user = userLookupHelper.getUser(sub); if(user.getId() == null){ IDMappingExtUtils.traceString("sub validation failed for : " + sub); } else{ IDMappingExtUtils.traceString("sub validation succeded for : " + sub); } } IDMappingExtUtils.traceString("STSUU: " + stsuu.toString());

Configuring storage.yml

  • Based on the above mapping rule, the LDAP connection is referenced by the UserLookupHelper usingldap_connection.
  • Update the ldapcfg configuration and the LDAP connection details in storage.yml.
... server_connections: # Server connections - name: ldap_srvconn # Connection name type: ldap # Connection type hosts: # List of host information (IP and port) - hostname: openldap # Server's hostname hostport: 636 # Server's host port credential: # Credential information to connect to the host. bind_dn: cn=root,secAuthority=Default # Specifies the binding credential for the LDAP server connection. bind_password: "OBF:U2FsdGVkX1+BPKsUsh0oGSsNNr1HSsAQWwPLB30MyDs=" # Specifies the binding password for the LDAP server connection. It is recommended to obfuscate this. ssl: certificate: # The SSL connection certificate array. - ks:ldap_keys # The SSL keystore to be used for SSL connections. ks: indicates keystore. disable_hostname_verification: false # The SSL connection validates the hostname. conn_settings: # Connection pool settings for the LDAP server. It can be specified at the top level if the settings are common across hosts. max_pool_size: 50 # Maximum connection pool size. connect_timeout: 3 # Connect timeout, in seconds. aged_timeout: 5 # Aged timeout, in seconds. ldapcfg: - name: ldap_test_cfg_01 scope: subtree user_object_classes: top,Person,organizationalPerson,inetOrgPerson filter: (|(|(objectclass=ePerson)(objectclass=person))(objectclass=User)) selector: objectClass,cn,sn,givenName,userPassword srv_conn: ldap_srvconn attribute: uid baseDN: dc=ibm,dc=com

Configuring the static client

  • Configure two clients.
  • One client that generates token.
  • Another client that wants to exchange the token for a different token.
  • urn:x-oath:params:oauth:token-type:device-secret is added as a supported_actor_token_types in the client configuration
  • device_sso is added to the list of scopes supported.
# Copyright contributors to the IBM Verify Identity Access OIDC Provider Resources project clients: - client_id: clientTokenExchange client_secret: "OBF:U2FsdGVkX19iBhlwc53QkybjO6RjFHhSbz4VRudYHA=" # Client secret that is used for client authentication and/or JWT signing/encryption. `OBF:` indicates obfuscated string. client_name: clientTokenExchange # Name of the client. client_id_issued_at: 1642399207 # Timestamp (in seconds) from when the client is created. enabled: true # Set to `true` to enable this client grant_types: # Grant type that the client is allowed to use at the token endpoint. - authorization_code - password - client_credentials - implicit - refresh_token - urn:openid:params:grant-type:ciba - urn:ietf:params:oauth:grant-type:token-exchange response_types: # Response type that the client is allowed to use at the authorization endpoint. - code id_token - code - code token - none - code token id_token redirect_uris: # Redirection URI strings for use in redirect-based flows such as the authorization code and implicit flows. - https://www.rp.com/redirect request_uris: # Request URIs that are pre-registered by the Relying Party for use at the OIDC Provider. - https://www.rp.com/request/test.jwt scopes: # A list of scope values that the client can use when requesting access tokens. - cdr:registration - openid - profile jwks_uri: https://www.rp.com/oidc/endpoint/default/jwks id_token_signed_response_alg: PS512 token_endpoint_auth_method: client_secret_post token_exchange_settings: client_groups: - benefits - insurance supported_subject_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token supported_actor_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token - urn:x-oath:params:oauth:token-type:device-secret supported_requested_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token - client_id: tokenGenerated client_secret: "OBF:U2FsdGVkX19iBhlwc53QkybjO6RjFHhSbz4VRudYHA=" # Client secret that is used for client authentication and/or JWT signing/encryption. `OBF:` indicates obfuscated string. client_name: tokenGenerated # Name of the client. client_id_issued_at: 1642399207 # Timestamp (in seconds) from when the client is created. enabled: true # Set to `true` to enable this client grant_types: # Grant type that the client is allowed to use at the token endpoint. - authorization_code - password - client_credentials - implicit - refresh_token - urn:openid:params:grant-type:ciba - urn:ietf:params:oauth:grant-type:token-exchange response_types: # Response type that the client is allowed to use at the authorization endpoint. - code id_token - code - code token - none - code token id_token redirect_uris: # Redirection URI strings for use in redirect-based flows such as the authorization code and implicit flows. - https://www.rp.com/redirect request_uris: # Request URIs that are pre-registered by the Relying Party for use at the OIDC Provider. - https://www.rp.com/request/test.jwt scopes: # A list of scope values that the client can use when requesting access tokens. - cdr:registration - openid - profile - device_sso jwks_uri: https://www.rp.com/oidc/endpoint/default/jwks id_token_signed_response_alg: PS512 token_endpoint_auth_method: client_secret_post token_exchange_settings: client_groups: - benefits - insurance supported_subject_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token supported_actor_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token - urn:x-oath:params:oauth:token-type:device-secret supported_requested_token_types: - urn:ietf:params:oauth:token-type:access_token - urn:ietf:params:oauth:token-type:refresh_token - urn:ietf:params:oauth:token-type:id_token
  • client_groups - Clients are logically grouper using client_groups configuration. Clients belonging to the same client_group can exchange tokens generated with another client belonging to the same group.

Token exchange request example with device_secret

--header 'Content-Type: application/x-www-form-urlencoded' \ --data-urlencode 'client_id=clientTokenExchange' \ --data-urlencode 'client_secret=asfasdfawqdewq' \ --data-urlencode 'grant_type=urn:ietf:params:oauth:grant-type:token-exchange' \ --data-urlencode 'subject_token=eyJhbGciOiJSUzI1NiIsImtpZCI6Imh0dHBzZXJ2ZXJrZXkiLCJ0eXAiOiJKV1QifQ.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.1tdrA4CeAZoLnqSEzLXfQJGSWacyjYujKGykzjT0gW0hRIL_Gjo_LdrmI5LooaolbMLHbwFdEc2Q_XBc_TKketpcFyqOu8uyCdWCJGgtS3X_Qh2flqOd3NtKrhZbuD5CcGFi0FUQ7gaVYOgDXmFLHBk6OorDLOgBv3wPa9RTSC0JMqQ-phkRfW-08id0VtgOACUdyQqyN8DDEQamp2reHj4D4hb0bayB0My4QOGTsBukubCFUzerZNw_AJiXR4shMQvIFXe_85gZlVhzQ402pn9Sz8kMZZ6BGKwIlHlRtM6jhyFl2t-ETcY8NAmvxAUxSR6gq3DcT5pGPcsBooH2Zw' \ --data-urlencode 'subject_token_type=urn:ietf:params:oauth:token-type:id_token' \ --data-urlencode 'actor_token=PJEef6mv4z9uxdXrns7HpEOnuhPwxPRFA46d8TjXwjQ.zUlg_vF6Ag1P9ndm8EhS7Mpyd4Jd-gMgJk357lv2yvy_N2yOaieIqO7fIh5AzASmCZ0Ujmp87obPnkYT13y-sQ' \ --data-urlencode 'actor_token_type=urn:x-oath:params:oauth:token-type:device-secret' \ --data-urlencode 'audience=https://www.ibm.com'

Revoking the device_secret

  • In the scenario where device_secret needs to be revoked (Lost device)
    • Either the device_secret and the tokens generated during the authorization code flow can be revoked
    • Or the device_secret, the tokens generated during the authorization code and the tokens generated by token exchange can be revoked
  • To revoke the device_secret and the tokens generated during the authorization code flow, here is an example of the request.
curl --location 'https://isvaop.ibm.com:445/isvaop/oauth2/revoke' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'client_id=tokenGenerated' \
--data-urlencode 'client_secret=asfasdfawqdewq' \
--data-urlencode 'token=PJEef6mv4z9uxdXrns7HpEOnuhPwxPRFA46d8TjXwjQ.zUlg_vF6Ag1P9ndm8EhS7Mpyd4Jd-gMgJk357lv2yvy_N2yOaieIqO7fIh5AzASmCZ0Ujmp87obPnkYT13y-sQ'
  • To revoke the device_secret, tokens generated during the authorization code flow and tokens generated by token exchange flow, here is an example of the request.
curl --location 'https://isvaop.ibm.com:445/isvaop/oauth2/revoke' \
--header 'deleteAllTokens: true' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'client_id=tokenGenerated' \
--data-urlencode 'client_secret=asfasdfawqdewq' \
--data-urlencode 'token=PJEef6mv4z9uxdXrns7HpEOnuhPwxPRFA46d8TjXwjQ.zUlg_vF6Ag1P9ndm8EhS7Mpyd4Jd-gMgJk357lv2yvy_N2yOaieIqO7fIh5AzASmCZ0Ujmp87obPnkYT13y-sQ'

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